Network Printer Show Offline

I have a HP laserjet printer attached via USB to a Windows 7 (32bit) desktop and working fine. I try to connect it through network on different laptop using win 7 ( 64 bit) it installed as network printer and give test print, but next day after restart of laptop it show OFFLINE and i have to re install it again on network. The desktop have a static ip (on which printer is installed) and other laptop using DHCP service from my router.

What is wrong with network printer? Every day I have to reinstall it on laptops.

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